------------------------------------------------------------------------------ -- -- -- GNU ADA RUNTIME LIBRARY (GNARL) COMPONENTS -- -- -- -- S Y S T E M . S T R I N G _ O P S -- -- -- -- B o d y -- -- -- -- -- -- Copyright (C) 1992-1998 Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 2, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING. If not, write -- -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- -- MA 02111-1307, USA. -- -- -- -- As a special exception, if other files instantiate generics from this -- -- unit, or you link this unit with other files to produce an executable, -- -- this unit does not by itself cause the resulting executable to be -- -- covered by the GNU General Public License. This exception does not -- -- however invalidate any other reasons why the executable file might be -- -- covered by the GNU Public License. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ package body System.String_Ops is ---------------- -- Str_Concat -- ---------------- function Str_Concat (X, Y : String) return String is begin if X'Length <= 0 then return Y; else declare L : constant Natural := X'Length + Y'Length; R : String (X'First .. X'First + L - 1); begin R (X'Range) := X; R (X'First + X'Length .. R'Last) := Y; return R; end; end if; end Str_Concat; ------------------- -- Str_Concat_CC -- ------------------- function Str_Concat_CC (X, Y : Character) return String is R : String (1 .. 2); begin R (1) := X; R (2) := Y; return R; end Str_Concat_CC; ------------------- -- Str_Concat_CS -- ------------------- function Str_Concat_CS (X : Character; Y : String) return String is R : String (1 .. Y'Length + 1); begin R (1) := X; R (2 .. R'Last) := Y; return R; end Str_Concat_CS; ------------------- -- Str_Concat_SC -- ------------------- function Str_Concat_SC (X : String; Y : Character) return String is begin if X'Length <= 0 then return (1 => Y); else declare R : String (X'First .. X'Last + 1); begin R (X'Range) := X; R (R'Last) := Y; return R; end; end if; end Str_Concat_SC; --------------- -- Str_Equal -- --------------- function Str_Equal (A, B : String) return Boolean is begin if A'Length /= B'Length then return False; else for J in A'Range loop if A (J) /= B (J + (B'First - A'First)) then return False; end if; end loop; return True; end if; end Str_Equal; ------------------- -- Str_Normalize -- ------------------- procedure Str_Normalize (A : in out String) is begin for J in A'Range loop A (J) := Character'Last; end loop; end Str_Normalize; ------------------------ -- Wide_Str_Normalize -- ------------------------ procedure Wide_Str_Normalize (A : in out Wide_String) is begin for J in A'Range loop A (J) := Wide_Character'Last; end loop; end Wide_Str_Normalize; end System.String_Ops;